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ASoC: codecs: add Qualcomm Tambora (WCD9378) SDCA codec

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Add support for the Qualcomm Tambora (WCD9378) headset codec in SDCA
mode over SoundWire.  On ARM/DT platforms without ACPI/DisCo firmware
the SDCA topology and SoundWire port properties are supplied as static
data through the codec driver.

The codec exposes a single SimpleJack SDCA Function providing:
  - Headphone playback via FU 6 (mute + Q7.8 volume) and OT 43/45.
  - Headset mic capture via IT 33 with MICB2 bias at 2.75V.
  - MBHC-based headset jack detection.

The driver enables the codec supplies, releases the reset GPIO, and
uses:
  - sdw_slave_ops.read_prop to publish SoundWire slave properties and
    dpn caps for the compute-mode dataports.
  - sdca_class_ops.populate_function to hand the SDCA Function data
    (entities, clusters, init_table) to the class driver from static
    tables.

Binds SoundWire slave id 0x0217:0x0110 when qcom,sdca-compliant is
set on the DT node.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Link: https://patch.msgid.link/20260925161049.758913-8-srinivas.kandagatla@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Srinivas Kandagatla 2026-09-25 17:10:48 +01:00 committed by Mark Brown
parent a36d24da5c
commit 0c30b8ca84
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
5 changed files with 1164 additions and 0 deletions
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11
sound/soc/codecs/Kconfig
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@ -2552,6 +2552,17 @@ config SND_SOC_WCD939X_SDW
The WCD9390/9395 is a audio codec IC Integrated in
Qualcomm SoCs like SM8650.
config SND_SOC_WCD9378_SDCA
tristate "Qualcomm Tambora (WCD9378) SDCA codec"
depends on SOUNDWIRE
depends on SND_SOC_SDCA_CLASS
help
This enables support for the Qualcomm Tambora (WCD9378) headset
codec when driven via the SDCA class driver on ARM platforms
without ACPI/DisCo tables. It provides the static SDCA topology
and SoundWire data port properties transcribed from the factory
ACPI tables.
config SND_SOC_WM0010
tristate
depends on SPI_MASTER

2
sound/soc/codecs/Makefile
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@ -369,6 +369,7 @@ snd-soc-wcd938x-y := wcd938x.o
snd-soc-wcd938x-sdw-y := wcd938x-sdw.o
snd-soc-wcd939x-y := wcd939x.o
snd-soc-wcd939x-sdw-y := wcd939x-sdw.o
snd-soc-wcd9378-y := wcd9378-sdw.o wcd9378-sdca.o
snd-soc-wm-adsp-y := wm_adsp.o
snd-soc-wm-adsp-test-y := wm_adsp_fw_find_test.o
snd-soc-wm0010-y := wm0010.o
@ -825,6 +826,7 @@ ifdef CONFIG_SND_SOC_WCD939X_SDW
# avoid link failure by forcing sdw code built-in when needed
obj-$(CONFIG_SND_SOC_WCD939X) += snd-soc-wcd939x-sdw.o
endif
obj-$(CONFIG_SND_SOC_WCD9378_SDCA) += snd-soc-wcd9378.o
obj-$(CONFIG_SND_SOC_WM0010) += snd-soc-wm0010.o
obj-$(CONFIG_SND_SOC_WM1250_EV1) += snd-soc-wm1250-ev1.o
obj-$(CONFIG_SND_SOC_WM2000) += snd-soc-wm2000.o

1080
sound/soc/codecs/wcd9378-sdca.c Normal file
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20
sound/soc/codecs/wcd9378-sdca.h Normal file
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@ -0,0 +1,20 @@
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/* Copyright (c) 2025 Qualcomm Technologies, Inc. */
#ifndef _WCD9378_SDCA_H
#define _WCD9378_SDCA_H
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
int wcd9378_sdca_probe(struct sdw_slave *slave,
const struct sdw_device_id *id);
void wcd9378_sdca_remove(struct sdw_slave *slave);
int wcd9378_sdca_read_prop(struct sdw_slave *slave);
int wcd9378_sdca_runtime_suspend(struct device *dev);
int wcd9378_sdca_runtime_resume(struct device *dev);
int wcd9378_sdca_system_suspend(struct device *dev);
int wcd9378_sdca_system_resume(struct device *dev);
#endif /* _WCD9378_SDCA_H */

51
sound/soc/codecs/wcd9378-sdw.c Normal file
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@ -0,0 +1,51 @@
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
// Copyright (c) 2025 Qualcomm Technologies, Inc.
/*
* WCD9378 (Tambora) SoundWire driver glue for the SDCA compute-mode
* codec. The SDCA topology and hardware-specific probe logic live in
* wcd9378-sdca.c; this file carries the SoundWire slave driver plumbing
* and the module boilerplate.
*/
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include "wcd9378-sdca.h"
static const struct dev_pm_ops wcd9378_sdw_pm_ops = {
SYSTEM_SLEEP_PM_OPS(wcd9378_sdca_system_suspend,
wcd9378_sdca_system_resume)
RUNTIME_PM_OPS(wcd9378_sdca_runtime_suspend,
wcd9378_sdca_runtime_resume, NULL)
};
static const struct sdw_slave_ops wcd9378_sdw_ops = {
.read_prop = wcd9378_sdca_read_prop,
};
static const struct sdw_device_id wcd9378_sdw_id[] = {
SDW_SLAVE_ENTRY(0x0217, 0x0110, 0),
{ }
};
MODULE_DEVICE_TABLE(sdw, wcd9378_sdw_id);
static struct sdw_driver wcd9378_sdw_driver = {
.driver = {
.name = "wcd9378",
.pm = pm_ptr(&wcd9378_sdw_pm_ops),
},
.probe = wcd9378_sdca_probe,
.remove = wcd9378_sdca_remove,
.id_table = wcd9378_sdw_id,
.ops = &wcd9378_sdw_ops,
};
module_sdw_driver(wcd9378_sdw_driver);
MODULE_DESCRIPTION("Qualcomm WCD9378 (Tambora) SoundWire codec");
MODULE_AUTHOR("Qualcomm Technologies, Inc.");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_IMPORT_NS("SND_SOC_SDCA");
MODULE_IMPORT_NS("SND_SOC_SDCA_CLASS");